42,772 articles
Gerhard Hochschild
Gerhard Hochschild (1915–2010) was a German-American mathematician who created Hochschild cohomology, did foundational work on Lie and algebraic groups, and was elected to the National Academy of Sciences in 1979.
Gerhard L. Closs
Gerhard L. Closs, born Gerhard Ludwig Closs, was a German-born American physical organic chemist at the University of Chicago known for carbene chemistry and the radical-pair interpretation of CIDNP.
Gerhard Rempe
Gerhard Rempe, born 1956 in Bottrop, is a German physicist who pioneered cavity quantum electrodynamics with single atoms and led the Max Planck Institute of Quantum Optics from 1999.
Gerhard Ringel
Gerhard Ringel (October 28, 1919 – 2008) was an Austrian-born mathematician at UC Santa Cruz, a leader in graph theory best known for proving the Heawood map-coloring conjecture with Youngs in 1968.
Gerhard Stock
Gerhard Stock (born 1962) is a German theoretical physicist who holds the Chair of Theoretical Physics at the University of Freiburg and leads its Biomolecular Dynamics group.
Gerhard Thomsen
Gerhard Thomsen (1899–1934) was a German differential geometer, born in Hamburg and professor at Rostock, known for the (9₃) configuration named after him and a noted 1933 lecture on mathematics under the Nazi regime.
Gerhard Wegner
Gerhard Wegner, born 1940, is a German polymer chemist known for the "hairy-rod" macromolecule design and for founding the Max Planck Institute for Polymer Research.
Gerhart Friedlander
Gerhart Friedlander, born Gerhart Friedländer, was a German-born American nuclear chemist, a Manhattan Project veteran at Los Alamos who later chaired the Chemistry Department at Brookhaven National Laboratory.
Gerhart Lüders
Gerhart Lüders (1920–1995) was a German theoretical physicist who proved in 1954, and developed with Bruno Zumino in 1957, the CPT theorem, earning the 1966 Max Planck Medal.
Germacrene D
Germacrene D is a volatile sesquiterpene hydrocarbon, C₁₅H₂₄, with a ten-membered ring, found widely in plant essential oils and serving as a precursor to many other sesquiterpenes.
German Climate Protection Act
The German Climate Protection Act (Bundes-Klimaschutzgesetz, KSG) is Germany's central federal climate law, first adopted in December 2019, setting targets of 65% emissions cuts by 2030 and neutrality by 2045.
German customary units
German customary units were the weights and measures used across the Holy Roman Empire and German states before metrication, including the Fuss (foot), Elle (ell), and Pfund (pound).
German Physical Society
The German Physical Society (Deutsche Physikalische Gesellschaft, DPG), founded in Berlin in 1845 and renamed in 1899, is the world's oldest and largest physical society, with more than 50,000 members.
German Socio-Economic Panel
The German Socio-Economic Panel (SOEP; German: Sozio-oekonomisches Panel) is a representative longitudinal household survey run at DIW Berlin that has interviewed the same households every year since 1984, tracking income, employment, education, and health.
German tank problem
The German tank problem is the statistical problem of estimating a population's size from observed serial numbers, used by the Allies in World War II.
German Universities Excellence Initiative
The German Universities Excellence Initiative (Exzellenzinitiative) was a competitive federal and state funding program launched in 2005 to promote top-level research, distributing 4.6 billion euros before its successor, the Excellence Strategy, took over in 2019.
Germanane
Germanane (GeH) is a two-dimensional semiconductor made of a single honeycomb layer of germanium atoms each bonded to hydrogen, first synthesized in 2013 and explored for optoelectronics, sensing, and catalysis.
Germanene
Germanene is a two-dimensional material made of a single honeycomb layer of germanium atoms, the germanium analog of graphene, first synthesized in 2014. Unlike flat graphene, its lattice is low-buckled.
Germanium
Germanium is a grayish-white semimetallic element with atomic number 32, isolated in 1886 by Clemens Winkler in Germany, used today in fiber optics, infrared lenses, and PET plastic.
Germanium dioxide
Germanium dioxide (GeO₂), also called germania, is the stable oxide of germanium, a white water-soluble solid used in optical fiber manufacture, as a PET catalyst, and as a germanium feedstock.
Germanium monochalcogenides
Germanium monochalcogenides, principally germanium monosulfide (GeS) and germanium selenide (GeSe), are layered, van der Waals-bonded semiconductors with puckered structures like black phosphorus, studied as two-dimensional materials for optoelectronics, thermoelectrics, and solar energy conversion.
Germanium nanowire hole spin qubits
Germanium nanowire hole spin qubits are quantum bits using a single hole's spin in a germanium–silicon core–shell nanowire, first demonstrated in 2011 by Hu, Kuemmeth, Lieber, and Marcus.
Germanium quantum dots
Germanium quantum dots are nanoscale regions of germanium that confine charge carriers in all three dimensions, used in photodetectors and as hosts for hole spin qubits in quantum computing.
Germanium spin qubits
Germanium spin qubits are quantum bits that store information in a hole's spin in gate-defined germanium quantum dots, allowing fast, all-electrical qubit control without micromagnets.
Germanium telluride
Germanium telluride (GeTe) is a compound of germanium and tellurium that is a narrow-gap semiconductor, a ferroelectric metal, and one of the highest-performing thermoelectric materials for mid-temperature use.
Germanium-tin laser
A germanium-tin (GeSn) laser is a semiconductor laser whose gain medium is a germanium-tin alloy grown directly on silicon, first demonstrated in 2015 and not yet operating at room temperature.
Germanium/SiGe quantum wells
A germanium/silicon-germanium (Ge/SiGe) quantum well is an ultrathin germanium or strained silicon layer between SiGe barriers, hosting optical devices and hole spin qubits for quantum computing.
Germanone
Germanone is an organogermanium compound of formula R₂Ge=O, the germanium analog of a ketone; the first stable one, (Eind)₂Ge=O, was isolated in 2012 and traps CO₂ spontaneously.
Germanosilicate
A germanosilicate is a zeolite or zeolite-like framework in which germanium substitutes for silicon in tetrahedral positions, enabling large-pore topologies and Pt–Ge catalysts; the term also covers SiO₂–GeO₂ optical-fiber glasses.
Germanwatch
Germanwatch is a German non-governmental organization, founded in 1991 and based in Bonn and Berlin, that advocates on climate policy, food security, and global equity.